technical manual 2013 dc inverter series - maxa

8/10/2019 Technical Manual 2013 Dc Inverter Series - Maxa

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TECHNICAL MANUAL 2013

DC INVERTER SERIES

INDOOR UNITS

CASSETTES DUCTED FLOOR-CEILNG

CSD140A2 CAD140A2 SD140A2

CSD176A1 CAD176A2 SD176A2

OUTDOOR UNITS

OUD140A1

OUD176A1

This manual has been created for informative purpose. The company declines every responsibility for the results of projecting or installation based on the explanations and the technical

specifications given in this manual. Is besides forbidden the reproduction under any form of the texts and of the figures contained in this manual.


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Serie / Series / Serie / Serie / Srie

TECHNICAL MANUALDC INVERTER UNITS

Emissione / IssueAusgabe / mission

Sostituise / SupersedeErsetzt / Remplace

03 2013 05 - 2012

Catalogo/Catalogue/Catlogo/Katalog

MTE01029D0520-01

Possible wasted electrical or electronic devices/products should not be located together with normal domestic waste, but disposed according to the current WEEE law in compliancewith the European Directive 2002/96/EC and following modifications 2003/108/EC. Please inform yourself at your local Administration or at your reseller in case the product will be replaced with a similar one.


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Contents

Part 1: Indoor Units

Super slim cassette type ............................................................................................................4

Duct type ....................................................................................................................................9

Floor-Ceiling .............................................................................................................................15

Part 2: Outdoor Units................................................................................................................20


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Cassette type

Contents

1. Specifications ...................................................................................................................... 5

2. Dimensions.......................................................................................................................... 6

3. Sound levels........................................................................................................................ 6

4. Wiring diagrams .................................................................................................................. 7

5. Air Velocity and Temperature Distributions .......................................................................... 7

6. Electric characteristics......................................................................................................... 8

7. The specification of power................................................................................................... 8

8. Field wiring .......................................................................................................................... 8


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1. Specifications

Indoor models CSD140A2 CSD176A1

Power supply V-ph-Hz 220~240-1-50 220~240-1-50

Outdoor models OUD140A1 OUD176A1

Power supply V-ph-Hz 380~415-3-50 380~415-3-50

kW 14,0(4,3 ~ 15,5) 16,1(4,8 ~ 17,7)

Capacity kBtu/h 48,0(14,8 ~ 53,0) 55,0(16,5 ~ 60,5)

Input W 1200(4380 ~ 6010) 1350(5020 ~ 6820)

Current A 2,2(8,0 ~ 10,9) 2,5(9,1 ~ 12,4)

Cooling

E.E.R. W/W 3,21-A 3,21-A

kW 16,4(4,9 ~ 15,3) 19,0(5,7 ~ 20,9)Capacity

kBtu/h 16,8(56,0 ~ 62,5) 65,0(19,5 ~ 71,5)

Input W 4420(1170 ~5910) 5280(1390 ~ 6980)

Current A 8,0(2,1 ~10,7) 9,6(2,5 ~ 12,7)

Heating

C.O.P. W/W 3,71 3,61

Model YDK125-6E YDK125-6D

Qty 1 1

Input w 217/170/146 223/199/175

Capacitor F 6,5UF/450V 6,5UF/450V

Indoor fan motor

Speed (hi/mi/lo) r/min 850/680/580 840/770/670

a. Number of rows 3 3

b. Tube pitch(a) x row pitch(b) mm 21x13,37 21x13,37

c. Fin spacing mm 1,4 1,4

d. Fin type (code) Hydrophilic aluminium

e. Tube outside diameter and type mm 7, inner grooved tube

f. Coil length x height x width mm 2080x252x40,11 2080x252x40,11

Indoor coil

g. Number of circuits 10 12

Indoor air flow (Hi/Med/Lo) m3/h 2100/1750/1500 2200/1900/1650

Sound level (sound pressure) dB(A) 53/50/46 56/51/46

Dimension (W x Dx H) (body) mm 840x840x245 840x840x300

Packing (W x D x H) (body) mm 900x900x265 900x900x320

Dimension (W x D x H) (panel) mm 950x950x55 950x950x55

Packing (W x D x H) (panel) mm 1035x1035x90 1035x1035x90

Net/Gross weight (body) kg 27/30,5 31/34

Indoor unit

Net/Gross weight kg 5/8 5/8

Design pressure MPa 4,2/1,5 4,2/1,5

Drainage water pipe diameter mm OD32 OD32

Refrigerant piping Liquid side/Gas side mm 9,52/15,9(3/8"/5/8") 9,52/15,9(3/8"/5/8")

Controller C RG51C/E RG51Q1/BGE

Cooling C 17 17Operation

temperature Heating C 30 30

Notes:

1. Nominal cooling capacities are based on the following conditions:Indoor temp: 27CDB, 19CWB; Outdoor temp: 35CDB;2. Nominal heating capacities are based on the following conditions:

Indoor temp: 20CDB; Outdoor temp: 7CDB, 6CWB;3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.


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2. Dimensions

Models A HCSD140A2 245 >275

CSD176A1 245 >275

3. Sound levels

1. 0m

Microphone

Noise level dB(A)Models

H M L

CSD140A2 45 42 40

CSD176A1 45 42 40


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4. Wiring diagrams

CSD140A2, CSD176A1

5. Air Velocity and Temperature Distributions(Reference Data)

Airflow velocity

Temperature


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6. Electric characteristics

Indoor unit Power supplyModels

Hz Voltage Min Max MFA

CSD140A2 50 220-240 198 254 15

CSD176A1 50 220-240 198 254 15

Notes:MFA: Max. Fuse Amps. (A)

7. The specification of power

Models CSD140A2, CSD176A1

Phase 1-phase

Frequency and Voltage 220-240V, 50Hz

POWER WIRING (mm2) 31.0

INDOOR UNIT POWER

CIRCUIT BREAKER (A) 15

Phase 3-phase


POWER WIRING (mm2) 52,5

OUTDOOR UNIT POWER

CIRCUIT BREAKER (A) 40Indoor/Outdoor Connecting Wiring (Weak Electric Signal) (mm

2) 3-core shielded wire 3x0.5

Indoor/Outdoor Connecting Wiring (Strong Electric Signal) (mm2) -----

8. Field wring

CSD140A2, CSD176A1


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Duct typeContents

1. Specifications .................................................................................................................... 10

2. Dimensions........................................................................................................................ 11

3. Static pressure................................................................................................................... 12

4. Sound levels...................................................................................................................... 12

5. Wiring diagrams ................................................................................................................ 13

6. Electric characteristics....................................................................................................... 13

7. The specification of power................................................................................................. 13

8. Field wiring ........................................................................................................................ 14


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1. Specifications

Model name CAD140A2 CAD176A2Indoor

V-ph-Hz 220~240-1-50 220~240-1-50

Model name OUD140A1 OUD176A1Model

OutdoorV-ph-Hz 380~415-3-50 380~415-3-50

kW 14,0(4,3 ~ 15,5) 16,7(4,8 ~ 18,3)Capacity

Btu/h 48000(14800 ~ 53500) 57000(17000 ~ 62500)

Input W 4380(1200 ~ 6000) 5200(1380 ~ 7050)

Current A 8,0(2,2-10,9) 9,5(2,5 ~ 12,8)

Cooling

E.E.R. W/W 3,21-A 3,21-A

kW 17,0(4,9 ~ 18,6) 19,0(5,8 ~ 21,0)Capacity

Btu/h 58000(17000 ~ 63500) 65000(19800 ~ 72000)

Input W 4560(1180 ~ 5920) 5220(1410 ~ 7030)

Current A 8,3(2,2 ~ 10,7) 9,5(2,6 ~ 12,8)

Heating

C.O.P. W/W 3,73-A 3,65

Model YSK170-4P YSK180-4P

Qty 1 1

Input W 356/201/152 355/223/173

Capacitor F 10F/450V 10F/450V

Indoor fan motor

Speed (Hi/Med/Lo) r/min 1070/750/650 1080/830/710

Number of rows 4 4

Tube pitch(a)*row pitch(b) mm 21x13,37 21x13,37

Fin spacing mm 1,5 1,5

Fin type Hydrophilic aluminium Hydrophilic aluminium

Tube outside diameter and type mm 7, innergroove tube 7, innergroove tube

Coil length * height * width mm 1030x378x53.48 1030x378x53.48

Indoor coil

Number of circuits 8 8

Indoor air flow (Hi/Med/Lo) (No duct) m3/h 3010/2410/1940 3100/2500/2000

Indoor external static pressure (Hi) Pa 100 100

Indoor noise level (Hi/Med/Lo)70Pa dB(A) 46/41/37 46/41/37

Dimension (WxDxH) mm 1200x865x300 1200x865x300

Packing(WxDxH) mm 1385x920x373 1385x920x373Indoor unit

Net/Gross weight kg 45/54,5 50/59

Design pressure MPa 4,2/1,5 4,2/1,5Drainage water pipe diameter mm OD25 OD25

Refrigerant piping Liquid side/ Gas side mm 9.52/15.9(3/8"/5/8") 9.52/15.9(3/8"/5/8")

Controller KJR-10B/DP(T)-E KJR-10B/DP(T)-E



Notes: 1. Nominal cooling capacities are based on the following conditions:Indoor temp: 27CDB, 19CWB; Outdoor temp: 35CDB; Equivalent ref. piping: 7,5m (horizontal)

2. Nominal heating capacities are based on the following conditions:Indoor temp: 20CDB; Outdoor temp: 7CDB, 6CWB; Equivalent ref. piping: 7,5m (horizontal)

3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from ananechoic room.


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3. Static pressureCAD140A2 CAD176A2

120

110

Super high speed

100

Pa

250022001300

Mid speed

High speed

xternas

tatcpressure

a

3Air volume(m /h)

1000

90

80

70

60

50

40

30

20

10

Low speed

1600 1900 2800 3100

120

110

Super high speed

3400

100

3100280019001600

Low speed

10

20

30

40

50

60

70

80

90

Pa

1000

Air volume(m /h)3

Extern

alstaticpressure(Pa)

High speed

Mid speed

1300 2200 2500

4. Sound levels

SuctionDischarge

Microphone

1.4m

Concealed Duct Type

DuctDuct


H M L

CAD140A2 46 41 37

CAD176A2 46 41 37


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5. Wiring diagramsCAD140A2, CAD176A2


Indoor unit Power supplyModels

Hz Voltage Min. Max. MFACAD140A2 50 220-240 198 254 15

CAD176A2 50 220-240 198 254 15

Note:MFA: Max. Fuse Amps. (A)

7. The specification of power

Models CAD140A2, CAD176A2

Phase 1-phase



INDOOR UNIT POWER


Phase 3-phase



OUTDOOR UNIT POWER


Indoor/Outdoor Connecting Wiring (Weak Electric Signal) (mm2) 3-core shielded wire 3x0.5



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8. Field wiring

Air-conditioner link-circuit.

For models: CAD140A2, CAD176A2


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Index

Ceiling & Floor Type

1. Specifications .................................................................................................................. 16

2. Dimensions...................................................................................................................... 17

3. Wiring Diagrams.............................................................................................................. 184. Electric Characteristics................................................................................................... 18

5. Sound Levels ................................................................................................................... 19

6. The Specification of Power............................................................................................. 19

7. Field Wiring...................................................................................................................... 19


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1. Specifications

Model name SD140A2 SD176A2Indoor

V-ph-Hz 220~240-1-50 220~240-1-50

Model name OUD140A1 OUD176A1Model

OutdoorV-ph-Hz 380~415-3-50 380~415-3-50

kW 14,0(4,3 ~ 15,5) 16,4(4,9 ~ 18,4)

Capacity Btu/h 48000(14800 ~ 53200) 56000(16800 ~ 61500)

Input W 4380(1200 ~ 6000) 5110(1370 ~ 6930)

Current A 8,0(2,2 ~ 10,9) 9,3(2,5 ~ 12,6)

Cooling

EER W/W 3.21-A 3,21-A

kW 16,4(4,9 ~ 15,3) 19,0(5,7 ~ 20,9)Capacity

Btu/h 56000(16800 ~ 62800) 65000(19500 ~ 71500)

Input W 4420(1170 ~ 5910) 5280(1390 ~ 6980)

Current A 8,0(2,1 ~ 10,7) 9,6(2,5 ~ 12,7)

Heating

COP W/W 3,72 3,61

Model YSK85-4C YSK85-4C

Qty 2 2

Input W 121/104/95 121/104/95

Capacitor uF 2,5uF/450V 2,5uF/450V

Indoor fan motor

Speed (Hi/Med/Lo) r/min 1310/1190/1080 1310/1190/1080

Number of rows 3 3

Tube pitch(a)x row pitch(b) mm 21x13,37 21x13,37

Fin spacing mm 1,3 1,3

Fin type Hydrophilic aluminium Hydrophilic aluminium

Tube outside dia.and type mm 7, Inner groove tube 7, Inner groove tube

Coil length x height x width mm 1300x294x40.11 1300x294x40.11

Indoor coil

Number of circuits 8 8

Indoor air flow(Hi/Med/Lo) m3/h 2300/1900/1700 2300/1900/1700

Indoor noise level (sound pressure)(Hi/Med/Lo) dB(A) 54/51/47 51/48/45

Dimension (WxDxH) mm 1650x675x235 1650x675x235

Packing (WxDxH) mm 1725x755x313 1725x755x313Indoor unit

Net/Gross weight kg 38/44 38/44

Design pressure MPa 4,2/1,5 4,2/1,5

Drainage water pipe diameter mm OD25 OD25Refrigerant piping Liquid side/Gas side mm 9.5215.9(3/8"/5/8") 9.5215.9(3/8"/5/8")

Controller RG51Q1/BGE RG51Q1/BGE



Notes: 1. Nominal cooling capacities are based on the following conditions:Indoor temp: 27CDB, 19CWB; Outdoor temp: 35CDB; Equivalent ref. piping: 7,5m (horizontal)

2. Nominal heating capacities are based on the following conditions:Indoor temp: 20CDB; Outdoor temp: 7CDB, 6CWB; Equivalent ref. piping: 7,5m (horizontal)3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from ananechoic room.


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2. Dimensionsa. Wall mounting installation

B

A C

D

E

b. Ceiling installation

F

>20

mm

G

Models A B C D E F GSD140A2SD176A2

1670 680 240 1070 450 1542 200

Notes:The dimensions of SD140A2 and SD176A2


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3. Wiring DiagramsSD140A2, SD176A2

4. Electric CharacteristicsIndoor Units Power Supply

ModelsHz Voltage Min. Max. MFA

SD140A2 50 220-240 198 254 15

SD176A2 50 220-240 198 254 15Note: MFA: Max. Fuse Amps. (A)


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5. Sound Levels

Ceiling Floor

6. The Specification of PowerModels SD140A2, SD176A2

Phase 1-phase



INDOOR UNIT POWER


Phase 3-phase



OUTDOOR UNIT POWER


Indoor/Outdoor Connecting Wiring (Weak Electric Signal) (mm2) 30,5


7. Field Wiring


H M L

SD140A2 47 43 40

SD176A2 47 43 40


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Part 2Outdoor units

Contents

1. Specifications .......................................................................................................................21

2. Dimensions...........................................................................................................................22

3. Piping diagrams....................................................................................................................22

4. Wiring diagrams ...................................................................................................................23

5. Electric characteristics..........................................................................................................23

6. Operation limits.....................................................................................................................23

7. Sound levels.........................................................................................................................24

8. Point check function .............................................................................................................25

9. Troubleshooting....................................................................................................................27

9.1 Display board .....................................................................................................................27

9.2 Indoor unit malfunction .......................................................................................................28

9.3 Outdoor unit malfunction ....................................................................................................28

9.4 Solving steps for typical malfunction...................................................................................29

9.4.1 For the indoor unit ...........................................................................................................29

9.4.1.1. Open or short circuit of temperature sensor ................................................................ 29

9.4.1.2. Outdoor unit malfunction .............................................................................................29

9.4.1.3. Indoor EEPROM malfunction.......................................................................................30

9.4.1.4. Full-water malfunction .................................................................................................30

9.4.2 For the outdoor unit .........................................................................................................30

9.4.2.1 E0 malfunction..............................................................................................................309.4.2.2. E2 malfunction.............................................................................................................31

9.4.2.3. E3 malfunction.............................................................................................................32

9.4.2.4. E4 malfunction.............................................................................................................33

9.4.2.5. E5 malfunction.............................................................................................................34

9.4.2.6. P0 malfunction.............................................................................................................35

9.4.2.7. P1 malfunction.............................................................................................................36

9.4.2.8. P2 malfunction.............................................................................................................37

9.4.2.9. P3 malfunction.............................................................................................................38

9.4.2.10. P4 malfunction...........................................................................................................399.4.2.11. P5 malfunction ...........................................................................................................40

9.4.2.11. P6 malfunction ...........................................................................................................41

9.4.2.11. P7 malfunction ...........................................................................................................42

Appendix 1 Temperature Sensor Resistance Value Table (C - k) .........................................43

Appendix 2 Discharge Temperature Sensor Table (C - k).....................................................43


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2. Dimensions

UnitmmModels

A B C D E F H

OUD140A1

OUD176A1940 600 376 400 340 360 1245

3. Piping diagrams

OUD140A1, OUD176A1

LIQUID SIDE

GAS SIDE

HEAT

EXCHANGE

(EVAPORATOR) HEATEXCHANGE

(CONDENSER)

Compressor

2-WAY VALVE

3-WAY VALVE

4-WAY VALVE

COOLING

HEATING

T2 Evaporator

temp. sensor

T1 Room temp.

sensor

T3 Condenser

temp. sensor

AccumulatorT5 Discharge temp. sensor

High pressure switch

T4 Ambient

temp. sensor

Low pressure

switch

INDOOR OUTDOOR

Electronic

expansion valveCAPILIARY TUBE

Oil return Capillary

Oil separator

For the models OUD140A1 andOUD176A1, the accumulator is not included.


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4. Wiring diagrams

OUD140A1, OUD176A1


Outdoor UnitModels

Hz Voltage Min. Max.

OUD140A1 50 380-415 342 440

OUD176A1 50 380-415 342 440

6. Operation limits

TemperatureMode

Cooling operation Heating operation

Room temperature 17 30

Outdoor temperature (-15C50C) -1524


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17 30

-15

50

Indoor temperature(WB)

Outdoortemperature(D

B)

Cooling

Standard

operation

17 30

-15

24

Indoor temperature(DB)

Outdoortemperature(W

B)

Heating

Standard

operation

7. Sound levels


H

OUD140A1 58

OUD176A1 58


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8 Point Check Function

There is a check switch in outdoor PCB.

Press the switch SW1 to check the states of unit when the unit is running.

Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it will

display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check

function display. After 1.5s, it will display the content corresponding to No. N.the digital display tube will display the follow procedure when push SW1 each time.

N Display Remark

00 Normal display Display running frequency, running state or malfunction code

01 Indoor unit capacity demand code

Actual data*HP*10

If capacity demand code is higher than 99, the digital display tube will show

single digit and tens digit. (For example, the digital display tube show

5.0,it means the capacity demand is 15. the digital display tube show

60,it means the capacity demand is 6.0)

02 Amendatory capacity demand code

03The frequency after the capacity

requirement transfer

04 The frequency after the frequency limit

05 The frequency of sending to 341

06 Indoor unit evaporator outlet temp.(T2)If the temp. is lower than 0 degree, the digital display tube will show 0.If

the temp. is higher than 70 degree, the digital display tube will show 70.

07 Condenser pipe temp.(T3)

08 Outdoor ambient temp.(T4)

If the temp. is lower than -9 degree, the digital display tube will show -9.If

the temp. is higher than 70 degree, the digital display tube will show 70. If

the indoor unit is not connected, the digital display tube will show:

09 Compressor discharge temp.(Tp)

The display value is between 30~120 degree. If the temp. is lower than 30

degree, the digital display tube will show 30. If the temp. is higher than 99

degree, the digital display tube will show single digit and tens digit. (For

example, the digital display tube show 0.5, it means the compressor

discharge temp. is 105 degree. the digital display tube show 1.6, it means

the compressor discharge temp. is 116 degree)

10 AD value of current

11 AD value of voltageThe display value is hex number.

12 Indoor unit running mode code

13 Outdoor unit running mode codeOff:0, Fan only 1, Cooling: 2, Heating: 3, Forced cooling: 4

14 EXV open angle

Actual data/4.If the value is higher than 99, the digital display tube will show single digit

and tens digit.

For example, the digital display tube show 2.0, it means the EXV open

angle is 1204 = 480p.)

Bit7Frequency limit caused by IGBT

radiator

Bit6 Frequency limit caused by PFC

Bit5 Frequency limit caused by T4.



Bit2 Frequency limit caused by Tp.Bit1 Frequency limit caused by current

15 Frequency limit symbol

Bit0Frequency limit caused by

voltage

The display value is hex

number. For example, the

digital display tube show

2A,then Bit5=1, Bit3=1,

Bit1=1.

It means frequency limit

caused by T4, T3 and

current.


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16 DC fan motor speed

17 IGBT radiator temp.(Reserved)

The display value is between 13~120 degree. If the temp. is lower than 13

degree, the digital display tube will show 13.If the temp. is higher than 99

degree, the digital display tube will show single digit and tens digit. (For

example, the digital display tube show 0.5,it means the IGBT radiator

temp. is 105 degree. the digital display tube show 1.6, it means the IGBT

radiator temp. is 116 degree)

18 Indoor unit number The indoor unit can communicate with outdoor unit well.


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9.2 Indoor unit malfunction

For Normal 4-way cassette(CSD140A2, CSD176A1), ceiling & floor(SD140A2, SD176A2), Duct type

(CAD140A1, CAD176A1)

NO. MalfunctionRunning

lampTimerlamp

Defrostinglamp

Alarmlamp

Display

1 Communication malfunction between indoor and outdoor units. X X X E1

2 Open or short circuit of T1 room temp. sensor X X X E2

3 Open or short circuit of T2 middle pipe evap. Temp. sensor X X X E3

4 Open or short circuit of T2B outer pipe evap. Temp. sensor X X X E4

5 Full-water malfunction X X X EE

6 Indoor EEPROM malfunction X X X E7

7 Outdoor unit malfunction X X X Ed

X(off) (flash at 5Hz) (flash at 0.5Hz)

Note: Digital display is only available for normal 4-way cassette & duct type.

9.3 Outdoor unit malfunction

For OUD140A1, OUD176A1

Display Malfunction or Protection

E0 Outdoor EEPROM malfunction

E2 Indoor/outdoor units communication error

E3 Communication malfunction between IPM board and outdoor main board

E4 Open or short circuit of condenser temp. sensor T3 or outdoor ambient temp. sensor T4

E5 Voltage protection of compressor

P0 Top temperature protection of compressor

P1 High pressure protection

P2 Low pressure protection

P3 Current protection of compressor

P4 Discharge temperature protection of compressor

P5 High temperature protection of condenser

P6 IPM module protection

P7 High temperature protection of evaporator


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9.4 Solving steps for typical malfunction

9.4.1 For the indoor unit

9.4.1.1 Open or short circuit of temperature sensor

Check the connections

between temperature

sensor and PCB. Are

the connections good?

Correct the connections.No

Yes

Yes Replace indoor or outdoor PCB.

Replace the sensor

Check the resistance value

of the sensor via Appendix 1

Is it normal?

No

9.4.1.2. Outdoor unit malfunction


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9.4.1.3. Indoor EEPROM malfunction

If the EEPROM chip

is welded on PCB,

replace the PCB

directly. Otherwise,

check whether the

EEPROM chip

plugged in PCB well?

Yes

No

Yes

Insert the EEPROM well

Replace the indoor PCB.

Shut off the power supply and

turn it on 5 seconds later. Is it

still displaying the error code?

9.4.1.4. Full-water malfunction

If the water-level switch

is inserted well?No Insert the water-level switch well

If the water-level switch

is broken?Yes Replace the water-level switch

If the water pump is

normal?No Replace the water pump

Yes

No

Yes

Check PCB board or replace the indoor main PCB

9.4.2 For the outdoor unit

9.4.2.1. E0 malfunction


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9.4.2.2.E2 malfunction

Indoor / outdoor units communication error

E2 display

No

Power off, then turn on the unit 5

seconds later(reconnect the power

wire).Is the error still displaying

after several minutes?

Adopt shield cable/Shield

cable earthing.No

Yes

Correct the connection.No

Yes

Remove interference.

Increase the capacity of anti-interference

Yes

Yes

Replace the signal wire.Yes

Pull out and insert back.No

No

Replace indoor PCB, is the error

distinguished?

Yes

Replace the outdoor PCB.

No

Check whether theres any

interference.

Such as too many lamps, powertransformers? Or the signal wire

is too long?

Check whether the signal wire

is shield cable or whether the

shield cable is earthing?

Check whether the wire is

correct polarity? P to P, Q to Q,

E to E?

Check whether the signal wire

is broken?

Check whether the signal wires

insert on PCB well?


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Communication malfunction between

IPM board and outdoor main board

Is there at least one LED in

the IPM board light?

Check the signal wire between

the IPM module and the main

board, is it connected good?

Reconnect and retry. Is

error still display?

Replace IPM board, and

then check whether the

system can run normally

Replace the electric control

box

No

No

No

No

Yes

Trouble is solved

No

Yes

Replace outdoor main

board, and then check

whether the system can run

normally

No

Yes

Yes

E3 display


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Judge 1: Outdoor condenser temp. sensor (T3) is malfunction

E4 display

No

No

Replace condenser temp. sensor(T3)

Check whether the wiring of the

condenser temp. sensor(T3) is

broken off

Check whether the resistance of

condenser temp. sensorT3) is

wrong refer to the Appendix 1

Yes

Connect the wiring wellYes

Judge 2: Outdoor ambient temp. sensor (T4) is malfunction

No

Replace outdoor ambient

temperature sensor (T4)

Check whether the wiring of the

outdoor ambient temperature

sensor (T4) is broken off

Check whether the resistance of

outdoor ambient temperature

sensor (T4) is wrong refer to the

Appendix 1

Yes

Connect the wiring wellYes

No

Replace outdoor main PCB


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9.4.2.6. P0 malfunction


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When compressor discharge temperature is higher than 115C, the unit will stop, and unit runs again when

compressor discharge temperature is lower than 90C.

P4 display

Temperature protection of

compressor discharge

Check whether the

compressor discharge temp.

is more than 115C ?

Check whether the wiring

connection is right between

compressor discharge temp.

sensor and PCB according

to wiring diagrams?

Method: Check whether the

resistance of compressor

discharge temp. sensor is

right refer to the Appendix2

No

Yes

Yes

Trouble is solved

No

Judge: The

discharge temp.

sensor is broken

Check whether the

refrigerant is leak

Correct the wiring connection

Stop leaking and add refrigerant

Replace the compressor discharge temp. sensorNo

Yes

Replace outdoor main board

Yes


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When condenser high temp. is more than 65C, the unit will stop, and unit runs again when outdoor pipe

temp. less than 52C.

P5 display

High temperature protection of

condenser

Check whether the

condenser temperature is

more than 65C

Yes

Judge 1: Check whether the

outdoor ambient

temperature is higher than

50

No

Judge 3: The refrigerant

pipe is blocked

Let the refrigerant out, then use the high

pressure nitrogen or refrigerant to blow pipe,

vacuumize and charge the refrigerant again

Yes

Judge 2: Check whether theheat exchanger is dirty

No

Clean the heat exchangerYes

Replace outdoor main boardYes

Check whether the

resistance of condenser

temp. sensor is correct

refer to the Appendix1

Replace the temperature sensor

Stop the unitYes

No

No

No


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P7 display

High temperature protection of

evaporator

Whether compressor

operates?

Yes

Check whether the heat

exchanger is dirty, the air-

outlet is blocked and the

indoor fan is running

normal?

No

Check refrigerant system

(such as clogging of

capillary etc.)

No

Clean the heat exchanger and

the air-outlet

Reconnect and retestNo

Whether the

connection is

good?

No

Check the

resistance value of

the sensor via

Appendix 1,Is it

normal?

Check whether the

indoor fan is running

normal

Replace the temperature sensorNo

Yes

Whether the indoor

PCB is normal?Replace the indoor PCBNo

Yes


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Appendix1 Temperature Sensor Resistance Value Table (C--k)

C k C k C k C k-20 115.266 20 12.6431 60 2.35774 100 0.62973

-19 108.146 21 12.0561 61 2.27249 101 0.61148

-18 101.517 22 11.5000 62 2.19073 102 0.59386

-17 96.3423 23 10.9731 63 2.11241 103 0.57683

-16 89.5865 24 10.4736 64 2.03732 104 0.56038-15 84.2190 25 10.000 65 1.96532 105 0.54448

-14 79.3110 26 9.55074 66 1.89627 106 0.52912

-13 74.5360 27 9.12445 67 1.83003 107 0.51426

-12 70.1698 28 8.71983 68 1.76647 108 0.49989

-11 66.0898 29 8.33566 69 1.70547 109 0.48600

-10 62.2756 30 7.97078 70 1.64691 110 0.47256

-9 58.7079 31 7.62411 71 1.59068 111 0.45957

-8 56.3694 32 7.29464 72 1.53668 112 0.44699

-7 52.2438 33 6.98142 73 1.48481 113 0.43482

-6 49.3161 34 6.68355 74 1.43498 114 0.42304

-5 46.5725 35 6.40021 75 1.38703 115 0.41164

-4 44.0000 36 6.13059 76 1.34105 116 0.40060

-3 41.5878 37 5.87359 77 1.29078 117 0.38991

-2 39.8239 38 5.62961 78 1.25423 118 0.37956

-1 37.1988 39 5.39689 79 1.21330 119 0.36954

0 35.2024 40 5.17519 80 1.17393 120 0.35982

1 33.3269 41 4.96392 81 1.13604 121 0.35042

2 31.5635 42 4.76253 82 1.09958 122 0.3413

3 29.9058 43 4.57050 83 1.06448 123 0.33246

4 28.3459 44 4.38736 84 1.03069 124 0.32390

5 26.8778 45 4.21263 85 0.99815 125 0.315596 25.4954 46 4.04589 86 0.96681 126 0.30754

7 24.1932 47 3.88673 87 0.93662 127 0.29974

8 22.5662 48 3.73476 88 0.90753 128 0.29216

9 21.8094 49 3.58962 89 0.87950 129 0.28482

10 20.7184 50 3.45097 90 0.85248 130 0.27770

11 19.6891 51 3.31847 91 0.82643 131 0.27078

12 18.7177 52 3.19183 92 0.80132 132 0.26408

13 17.8005 53 3.07075 93 0.77709 133 0.25757

14 16.9341 54 2.95896 94 0.75373 134 0.25125

15 16.1156 55 2.84421 95 0.73119 135 0.24512

16 15.3418 56 2.73823 96 0.70944 136 0.23916

17 14.6181 57 2.63682 97 0.68844 137 0.23338

18 13.9180 58 2.53973 98 0.66818 138 0.22776

19 13.2631 59 2.44677 99 0.64862 139 0.22231


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Appendix 2Discharge temp. sensor table (C-- k)

C k C k C k C k

-20 542.7 20 68.66 60 13.59 100 3.702

-19 511.9 21 65.62 61 13.11 101 3.595

-18 483 22 62.73 62 12.65 102 3.492

-17 455.9 23 59.98 63 12.21 103 3.392

-16 430.5 24 57.37 64 11.79 104 3.296

-15 406.7 25 54.89 65 11.38 105 3.203

-14 384.3 26 52.53 66 10.99 106 3.113

-13 363.3 27 50.28 67 10.61 107 3.025

-12 343.6 28 48.14 68 10.25 108 2.941

-11 325.1 29 46.11 69 9.902 109 2.86

-10 307.7 30 44.17 70 9.569 110 2.781

-9 291.3 31 42.33 71 9.248 111 2.704

-8 275.9 32 40.57 72 8.94 112 2.63

-7 261.4 33 38.89 73 8.643 113 2.559

-6 247.8 34 37.3 74 8.358 114 2.489-5 234.9 35 35.78 75 8.084 115 2.422

-4 222.8 36 34.32 76 7.82 116 2.357

-3 211.4 37 32.94 77 7.566 117 2.294

-2 200.7 38 31.62 78 7.321 118 2.233

-1 190.5 39 30.36 79 7.086 119 2.174

0 180.9 40 29.15 80 6.859 120 2.117

1 171.9 41 28 81 6.641 121 2.061

2 163.3 42 26.9 82 6.43 122 2.007

3 155.2 43 25.86 83 6.228 123 1.955

4 147.6 44 24.85 84 6.033 124 1.9055 140.4 45 23.89 85 5.844 125 1.856

6 133.5 46 22.89 86 5.663 126 1.808

7 127.1 47 22.1 87 5.488 127 1.762

8 121 48 21.26 88 5.32 128 1.717

9 115.2 49 20.46 89 5.157 129 1.674

10 109.8 50 19.69 90 5 130 1.632

11 104.6 51 18.96 91 4.849

12 99.69 52 18.26 92 4.703

13 95.05 53 17.58 93 4.562

14 90.66 54 16.94 94 4.42615 86.49 55 16.32 95 4.294 B(25/50)=3950K

16 82.54 56 15.73 96 4.167

17 78.79 57 15.16 97 4.045 R(90)=5K3%

18 75.24 58 14.62 98 3.927

19 71.86 59 14.09 99 3.812


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Via Gettuglio Mansoldo(Loc. La Macia) 37040 Arcole

Verona, Italy

technical manual 2013 dc inverter series - maxa

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